1.使用动态内存分配生成动态数组来完成3*3矩阵转置函数

2.应用string类定义字符串，实现两个字符串的连接

3.修改实验4中的选做实验中的people类。具有如下属性：姓名char name[11]，编号char[7],性别char sex[3]，生日birthday，身份证char id[16]。其中“出生日期”定义为一个“日期”类内嵌函数对象，用成员函数实现对人员信息的录人和显示。要求包括：构造函数和析构函数，开呗构造函数，内联成员函数，聚集。在测试程序中定义people类的对象数组，录入数据并显示-1. Using dynamic memory allocation to generate dynamic array to complete the 3* 3 matrix transpose function 2. Application of the definition of string string class to realize the connection of two strings 3. Modify the selection experiment 4 to experiment in the people category. Has the following attributes: name char name [11], number char [7], gender char sex [3], birthday, birthday, ID card char id [16]. The " birth date"　is defined as a " date"　class nested function object, member functions to achieve the information recorded on the personnel and the show. Requirements include: the constructor and destructor, open chanting constructor, inline member functions, together. People in the test procedure defined in the class of object array, data entry and display